But what things would you want to see, but are probably not
going to happen? Let's keep it more realistic and exclude what's
definitely impossible.

For example, I'd like to see an episode focused Flurry Heart
getting a Cutie Mark (and finding her place). Why do I think it's
unlikely? Well, I just don't think they'd make a timeskip like
that. I mean, Pound and Pumpkin Cake are still toddlers, and I feel
like they won't get into CM-receiving age anytime soon. Therefore
Flurry growing sufficiently old anytime soon is probably not
happening. Not to mention, the CMC would have to grow up as
well.

So you might have noticed that I'm more or less an on-and-off
fan of the show - I only show up whenever the new episodes are
airing. Since I'm not strongly invested in the fandom, I don't feel
strongly about the show either. I mean, for example, I was
completely fine with Twilicorn, and while there are things I'd
criticize, ultimately, they don't have much impact on me.

As such, I can say that I've been almost consistently enjoying
the series, with only a few downs here and there. Usually, MLP:FiM
manages to balance out simplicity and more complex themes,
lightheartedness and seriousness, and therefore has things for both
children and adults to enjoy, at the same time not relying on
sneaking in dirty jokes or anything like that. And I even …

Okay so what are the small things in the show that were
mentioned once, or showed up for a short while, but were never
properly explored, in your opinion?

For me one of such things is Fluttershy's "freaky" knowledge of
sewing. It was brought up once and never explored, and I think they
could have shown her working with Rarity sometimes, maybe coming up
with new interesting ideas.